Anastomosis, Surgical ; methods ; Humans ; Organ Transplantation ; adverse effects ; methods ; Postoperative Complications ; etiology ; surgery ; Vascular Surgical Procedures ; methods

Oxidation of white phosphor, us by peroxides to produce mono-alkyl phosphate in the alcoholic solution has been studied under non-and catalytic conditions. In this paper, the mechanism of the oxidation process was analyzed. The content of mono-alkyl phosphalte in the product is affected by different types of alcoholic solution and peroxide solvent. The result shows the availabulity of the following order for the activity of the peroxide solvent and alcoholic solutions-tert-butyl hydroperoxide>(di) benzoyl peroxide>hydroperoxide; methanol> n-butyl alcohol> phenol. Under optimized reaction conditions: n (a white phosphorus) : n( tert-butyl hydroperoxide) : n (methanol)= 1:10:12, reaction temperature 80 ℃, reaction time 2.5 h, products of 80.0% mono-alkyl phosphonates can be provided when white phosphorus undergoes oxidation by tert-butyl hydroperoxide in the methanol solutions. When Cu (I), and Cn(Ⅱ) complexes are used as catalysts, it is possible to significantly enhance the oxidation of white phosphorus with the increase in the reaction rate. Th'e order for activity of catalysts is Cu(acac)2>Cu (CH3COO)2>Cu (C3 H7COO)2:>CuI>CuCI2. Noticeably, with Cu(acac)2 as catalyst, the selectivity for mono-alkyl phusphonates can reach 95% under adequate reaction conditions.

Objective To evaluate the biocompatibility,immunology and physiologic features of encapsulated Newborn Porcine Islets(NPI) in the liver of the recipient dogs with type I diabetes.Methods Type I diabetic dogs were perfused with 400 000-600 000 encapsulated NPI(group A,n = 15)or unencapsulated NPI(group B,n = 15)through the hepatic artery without immunosuppressive treatment.Liver function and CD4/CD8 in the recipients were measured before and after the transplantation.The livers from all NPI recipient dogs were analyzed by histopathology 6 months after transplantation(Tx).Results Insulin dose administrated to group A was reduced gradually within one week after Tx,from 22 u before Tx to 5 u after Tx,exogenous insulin required for group B was decreased from 24 u to 10 u.However,2 to 3 weeks after Tx,the insulin dose given to group B returned to the original level before Tx.In contrast,the amount of insulin administrated to group A was continually reduced to 8 u.Moreover,CD4+ cells in the blood of group B recipients were higher than that before Tx,whereas no significant alteration of CD4+ cells and CD8+ cells in the blood of group A after Tx.All NPI recipient dogs demonstrated a normal function and structure of the liver after Tx.Conclusion Microcapsulated NPI has a good biocompatibility in recipients livers providing prolong-ation of xenograft survival,and correcting the hyperglycemia of diabetic canines.(J Intervent Radiol,2006,15: 607-610)

Objective To evaluate the clinical value of SAA by detecting their expression levels in patients with lung cancer and the analysis of the relativity of SAA for early diagnosis.Methods There are 243 cases specimens obtained from lung cancer patients who were newly diagnosed and without any treatment in Zhejiang Cancer Hospital from April 2014 to June 2015.The 243 lung cancer individuals were 147 male, and 96 female, their ages ranged from 29 to 85 years, with an average age of 63 years.The distribution of pathological type was as follows:95 patients were adenocarcinoma, 102 patients were squamous carcinoma, and 46 patients were small cell carcinoma.The distribution of TNM staging systems was as follows: 59 patients in stage 1and stage 2, 54 patients in stage 3, and 130 patients in stage 4.While 179 cases physical examination as the control.There were 94 individuals male, and 85 individuals female.Their ages ranged from 26 to 86 years, with an average age of 61 years.By using latex enhanced immune turbidimetric method, serum SAA concentrations in patients with lung cancer and healthy controls were checked on the Hitachi-7600 automated chemistry analyzer ( Hitachi ).The comparisons of all analyses values between healthy controls and lung cancer were estimated by two independent samples nonparametric tests ( Mann-Whitney U).The association between SAA and lung cancer prognostic factors such as age, smoking status and metastasis, was evaluated by spearman correlation and multivariate analysis.Results The median and interquartile spacing of SAA concentration was 42.36 mg/L (9.35, 74.22) in lung cancer patients.While 24 mg/L ( 3.25, 21.45 ).The median level of SAA in lung cancer patients (42.36 mg/L) were significantly higher than in healthy controls (11.24 mg/L), and difference reached statistically significant (Z=-2.403,P=0.006).Nevertheless, there was no significant difference in SAA concentrations among the different pathological types(Z=-1.013, P=0.339), ages (Z=0.578, P=0.458) and gender(Z=0.726, P=0.246) of lung cancer patients.While the level of SAA in has smoking status (Z=-2.282, P=0.013) and distant metastasis (Z=-2.138, P=0.017) of lung cancer was higher.By drawing ROC curve, the cut off value of SAA in distinguishing lung cancer with healthy control was 14.48 mg/L.Meanwhile, the AUC was 0.811, the accuracy is 89.12% and the sensitivity was 88.73%.Serum concentration was positively related with smoking status ( r =0.331, P =0.018 ) and distant metastasis ( r =0.372, P=0.015 ) by Spearman correlation analysis .Conclusion Serum SAA concentrations may contribute to the auxiliary diagnosis of lung cancer, evaluate the clinical stage and distant metastases of lung cancer.

BACKGROUND:There are objections to the efficacy and safety of total hip arthroplasty and artificial femoral head arthroplasty in the treatment of femoral neck fracture.
OBJECTIVE:To assess the efficacy and safety of one-stage total hip arthroplasty and femoral head arthroplasty for > 60-year-old patients with femoral neck fractures.
METHODS:According to the search strategy of Cochrane colaboration network, we searched PubMed (1966 to December 2014), EMbase (1974 to December 2014), Cochrane Library (Issue 3, 2011), China Biology Medicine database(1978 to December 2014), China National Knowledge Infrastructure (1994 to December 2014), VIP database (1989 to December 2014), and Wanfang Database (1979 to December 2014). Twenty-one articles on total hip arthroplasty and hemiarthroplasty for elderly femoral neck fractures were included. Two reviewers independently evaluated the quality of the included studies and extracted the data. In case of disagreement, settlement was made by negotiation. Meta-analysis was performed by RevMan 5.0 software in the included studies.
RESULTS AND CONCLUSION:(1) Literature analysis: five randomized controled studies, three quasi-randomized controled studies, and thirteen retrospective cohort studies were included, containing 2 250 patients. (2) Meta-analysis: No significant differencein rate of dislocation, deep infection rate and mortality rate in 1 year after replacement was detected between total hip arthroplasty and hemiarthroplasty for elderly femoral neck fractures (dislocation rate:RR=1.38, 95%CI: 0.81-2.34; deep infection rate RR=1.12, 95%CI: 0.60-2.11; mortality rateRR=0.90, 95%CI: 0.69-1.18). Reoperation rate was higher in the hemiarthroplasty group than in the total hip arthroplasty group (RR=0.46, 95%CI: 0.32-0.66). Harris score on the affected side between1 and 4 years was significantly higher in the total hip arthroplasty group than in the hemiarthroplasty group (MD=5.64, 95%CI: 2.82-8.46). (3) Results suggested that if physical conditions permit, compared with hemiarthroplasty group, femoral neck fractures patients aged > 60 years old in the total hip arthroplasty group had better hip function, but no significant difference was found in dislocation, deep infection and mortality between both groups.

Objective Speckle is the inherent problem exists in B-Mode ultrasound image,and effective speckle noise reduction will improve the image quality and contribute greatly to clinical doctors to diagnose,especially in fine ophthalmic examination with high frequency ultrasound.Methods This paper proposed a new speckle reduction method based on the Laplacian pyramid and multiscale analysis.In the Laplacian pyramid,true clinical features were separated from noise,according to the different bandpass ultrasound image characteristics in each layer,and the advanced eight directions speckle reduction anisotropic diffusion (SRAD)was adapted to suppressed the speckle noise,and the identified noise and the extracted features were selectively emphasized by suitable edge,coherence and contrast enhancement filtering from fine to coarse scales.The performance of the proposed method was compared to the traditional SRAD method and coherence-enhancing diffusion method by measuring the equivalent number of looks (ENL) and Time cost.Results The ENL and Time cost value of the proposed method were higher compared to the SRAD and the cedif method,i.e 1.172 3 vs 1.122 3,0.929 3 and 0.864 0 vs 1.396 0,1.468 3.Conclusions In summary,the proposed method can more effectively remove the speckle noise while preserving the edge and details of the images.

Objective · To study the regulation of hsa-miRNA124-3p on the proliferation and migration of human lung cancer NCI-H460 cells and its mechanism. Methods · Four pairs of lung cancer and para-carcinoma tissues were harvested in clinical and measured for hsa-miRNA124-3p and Krüppellike factor 4 (KLF4) levels. The theoretical binding site of hsa-miRNA124-3p in 3'-UTR of KLF4 was predicted by bioinformatics, and validated by luciferase report assay. NCI-H460 cells were transfected with pshRNA-Sponge-miRNA124 or pshRNA-KLF4, and 48 hours later, the proliferation of NCI-H460 cells after genetic intervention was assayed by the MTT method, and cell migration ability was observed by streak method. Results · For all four pairs of samples tested, hsa-miRNA124-3p was higher in the cancer tissues than in the adjacent tissue (P<0.01), and KLF4 protein was lower in the cancer tissues than in the adjacent tissue (P<0.01). The bioinformatic analysis showed there is a theoretical binding site (5'-UGCCUUAA-3') of hsa-miRNA124-3p in 3'-UTR of KLF4. Luciferase activity assay showed that hsa-miRNA124-3p could bind to the 3'-UTR region of KLF4 gene and negatively regulate the expression of protein. The proliferation of NC-H460 cells was suppressed by transfection with pshRNA-Sponge-miRNA12472 h after transfection (P<0.05 ). Compared with the control group, the proliferation activity of pshRNA-KLF4 transfection group was further enhanced (P<0.05) There was no significant difference in the proliferation of pshRNA-Sponge-miRNA124 and pshRNA-KLF4 cotransfection group and the control group (P>0.05). The data of cell migration assay showed that the changes of cell migration ability were the same as proliferation activity of the cells in groups 72 h after transfection. Conclusion · Hsa-miRNA124-3p increases the proliferation and migration in NCI-H460 cells via suppressing the expression of KLF4, and reducing the content of miRNA124-3p in NC-H460 cells can inhibit cell proliferation and migration via upregulating KLF4 expression.

As a common disease in clinical, the treatment of lumbar disc herniation (LDH) focused on local intervertebral disc, such as surgery and other interventional therapy treatment, but postoperative complications and recurrence rate has been a difficult problem in the field of profession. With the development of spine biomechanics and anatomy, researches on lumbar herniation also increased. Researchers discovered that the incidence and prognosis of LDH were inseparable with local muscle and soft tissue. As the deep paraspinal muscles, multifidus muscle plays an important role to make lumbar stability. Its abnormal function could reduce the stable of lumbar spine, and the chronic lumbar disease could also lead to multifidus muscle atrophy.
Animals ; Humans ; Intervertebral Disc Displacement ; physiopathology ; surgery ; Lumbosacral Region ; physiopathology ; surgery ; Paraspinal Muscles ; physiopathology

Objective To study the correlation between clinicopathological characteristics and lymph node metastasis and prognosis of rectal neuroendocrine tumors (NET),and try to explore the choice of surgical approach.Methods The clinicopathological data of 48 postoperative rectal NET patients were collected.The univariate and multivariate analysis of the correlation between clinicopathologic characteristics and lymph node metastasis were performed by chi-square test and Logistic regression.The prognosis single factor survival analysis was analyzed by Kaplan-Meier method.The survival rates were compared by Log-rank test.The prognosis multivariate survival analysis was performed by the use of Cox model.Results The results of univariate analysis indicated that clinicopathological characteristics related with lymph node metastasis were tumor distance from anal verge less than six cm,tumor diameter over two cm,muscularis invasion,distant metastasis and histological grade 3.The results of multivariate analysis showed that histological grade 3 was an independent risk factor of lymph node metastasis (OR=9.333,95 ％CI:1.054 to 82.635,P=0.045).The results of univariate survival analysis suggested that factors correlated with poor prognosis were tumor distance from anal verge less than six cm,tumor diameter over two cm,muscularis invasion,lymph node metastasis,distant metastasis and histological grade 3.The results of multivariate survival analysis indicated that tumor distance from anal verge less than six cm (HR=0.215,95 ％CI:0.047 to 0.980,P=0.047),distant metastasis (HR=8.788,95％CI:2.612 to 29.571,P＜0.01) and histological grade3 (HR=5.510,95％CI:1.692-17.944,P=0.005) were independent factors associated with poor prognosis.Conclusions For histological grade 1 and 2 rectal NET patients without distant metastasis,radical surgery is recommended when tumor diameter over two cm or muscularis invasion exists.For histological grade 3 rectal NET patients without distant metastasis,radical surgery is recommended.

Objective To explore the effect of miR-24-2 on the in vitro proliferation of U-2OS cells. Methods U-2OS cells were randomly allocat-ed into 4 groups:miR-24-2 mimic group,miR-24-2 inhibitor group,negative control group,and normal control group. MicroRNAs were transfected into U-2OS cells using Lipofectamine?2000. miR-24-2 expression level and the proliferation of U-2OS cells after transfection were detected by real-time quantitative RT-PCR(RT-qPCR)and MTT proliferation assays,respectively. Results RT-qPCR results showed that miR-24-2 level was sig-nificantly higher in the miR-24-2 mimic group and lower in the miR-24-2 inhibitor group than those in the controls,indicating the successive trans-fection. MTT proliferation assay results proved that the cell viability was significantly lower in the U-2OS cells transfected with miR-24-2 mimic and higher in inhibitor groups compared to the control. Conclusion MiR-24-2 inhibits growth of the U-2OS cells,which could be a potential biomarker in the treatment of osteosarcoma.